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 Karl Franzens University Graz

Graz University of Technology 

Nanophotonics
Thomas Klar
Johannes Kepler Uni Linz
17:00 - 18:00 Tuesday 21 June 2011 KFU

Ernst Abbe once pointed out, that optics below the dimensions of the wavelength of light is pretty cumbersome. This claim kept its dogmatic character for one century. However, it has recently been shown that a resolution of some tens of nanometres is indeed possible in three dimensional far-field fluorescence microscopy [2]. Another field of optics, where a “half wavelength criterion” seemed to apply, are microresonators where the smallest thinkable resonator was thought to be two mirrors spaced by at least half a wavelength. Nevertheless, nanoresonators below this limit have recently been realized [4]. These, and similar experiments have established the field of „nanophotonics“. Applications include microscopy [2], biosensing [7,8], optoelectronics [6], plasmonics [1,3,4] and metamaterials [5,9].

[1] T. Klar, M. Perner, S. Grosse, G. von Plessen, W. Spirkl and J. Feldmann Phys. Rev. Lett. 80, 4249 (1998).
[2] T. A. Klar, S. Jakobs, M. Dyba, A. Egner and S. W. Hell PNAS, 97, 8206-8210 (2000).
[3] E. Dulkeith et al., Phys. Rev. Lett. 89, 203002 (2002)
[4] M. Ringler et al. Phys. Rev. Lett. 100, 203002 (2008)
[5] E. Shevchenko et al. Journal of the American Chemical Society (JACS) 130, 3274 (2008)
[6] T. Franzl, T. A. Klar, S. Schietinger, A. L. Rogach, and J. Feldmann, Nano Lett. 4, 1599 (2004)
[7] G. Raschke et al., Nano Lett. 3, 935 (2003)
[8] J. Stehr et al. Nano Lett. 8 (2), 619 (2008)
[9] T. A. Klar et al. IEEE J. Sel. Top. Quantum Electronics, 12, 1106 (2006)